Grohe Zedra Single-Handle Beverage Faucet (Cold Water Only) with Filtration 6.6 L/min (1.75 gpm) - 30026Grohe Zedra Single Handle Beverage Faucet (Cold Water Only) with Filtration 1. 75 GPM 30026 Cold water beverage faucet designed to deliver clean, filtered drinking water with a compact, modern profile. Features Dispenses cold filtered tap water Requires GROHE Blue filter system (filter head 40438000, sold separately) Ideal for bar sinks or secondary kitchen use GROHE SilkMove for smooth and precise handle control Ceramic disc valve ensures drip free